V6170 Datasheet, PDF (1/12 Pages) List of Unclassifed Manufacturers – Accurate Voltage Window Surveillance and Software Monitoring

EM MICROELECTRONIC-MARIN SA
V6170
Accurate Voltage Window Surveillance
and Software Monitoring
Features
n Standby mode, maximum current 35 mA
n Reset output guaranteed for V_DD voltage
down to 1.2 V
n Comparator for voltage monitoring,
voltage reference 1.17 V
n ±1.5% voltage reference accuracy at + 25 °C
±3% voltage reference accuracy for -40 to +85 °C
n Programmable reset voltage monitoring
n Voltage window, high threshold 5.9 V
n Programmable power-on reset (POR) delay
n Watchdog with programmable time window
guarantees a minimum time and a maximum time
between software clearing of the watchdog
n Time base accuracy ± 10%
n System enable (EN) output offers added security
n 3 chip select feed-thru circuit controlled by EN
n TTL / CMOS compatible
n -40 to +85 °C temperature range
n DIP8 and SO8 packages
Typical Operating Configuration
V_DD
V6170
R
V_IN
TCL
RES
V_SS
EN
Description
The V6170 offers a high level of integration by voltage
monitoring and software monitoring in an 8 lead
package. A comparator monitors the voltage applied at
the V_IN input comparing it with an internal 1.17 V
reference. The power-on reset function is initialized after
V_IN reaches 1.17 V and takes the reset output inactive
after T_POR depending of external resistance. The reset
output goes active low when the V_IN voltage is less than
1.17 V or when V_DD is higher than 5.9 V. The RES and EN
outputs are guaranteed to be in a correct state for a
supply voltage as low as 1.2 V. The watchdog function
monitors software cycle time and execution. If the
software clears the watchdog too quickly (incorrect cycle
time) or too slowly (incorrect execution), it will cause the
system to be reset. The system enable output prevents
critical control functions being activated until software
has successfully cleared the watchdog three times. Such
a security could be used to prevent motor controls being
energized on repeated resets of a faulty system.
Applications
Pin Assignment
DIP8 / SO8
EN
RES
TCL
V_SS
V6170
n Industrial electronics
n Cellular telephones
n Security systems
n Battery powered products
n Automotive electronics
GND
Fig. 1
V_IN
R
V_DD
NC
Fig. 2
1